#!/bin/sh
set -e
 	
pkg_dir=$1
 	
rm -f Packages
rm -f Packages.gz
 	
if [ -z $pkg_dir ] || [ ! -d $pkg_dir ]; then
        echo "Usage: ipkg-make-index <package_directory>"
        exit 1
fi
 	
which md5sum 2>&1 >/dev/null || alias md5sum=md5
 	
touch Packages
 	
for pkg in `find $pkg_dir -name '*.ipk' | sort`; do
        echo "Generating index for package $pkg" >&2
        file_size=$(ls -l $pkg | awk '{print $5}')
        md5sum=$(md5sum $pkg | awk '{print $1}')
        # Take pains to make variable value sed-safe
        sed_safe_pkg=`echo $pkg | sed -e 's/\\//\\\\\\//g'`
        ar x $pkg ./control.tar.gz 
        gzip -d -f ./control.tar.gz
        tar xOf control.tar ./control \
            | sed -e "s/^Description:/Filename: $sed_safe_pkg\\
Size: $file_size\\
MD5Sum: $md5sum\\
Description:/" >> Packages
        echo "" >> Packages
done

gzip Packages
rm -f control control.tar


